Well, if I could pick what my personal heaven would be like, I'd like it to be where I could go anywhere, anytime, past, present, or future, and I could meet and talk with anybody who has or will ever lived, as well as live out a few personal fantasies. I'd like share a drink with Einstein, Stephen Hawking, Newton, Isambard Kingdom Brunel, and Da Vinci (maybe a few more depending on how big the bar is) and try and learn something from each of them. Then it'd be round two and I'd do the same with some aliens ("ET not pick up tab").
Then I'd like to go back in time to see my hometown in its heyday and watch the steam trains roll by and visit the roundhouse and shops, then go take a few rides on some of the old ocean liners like the Titanic or the SS United States, then maybe go see Mars back in the distant past (presumably when it was wet and might've had somebody to talk to there...just saying...)
Before any of that, and all the other things I'd do but don't have the space to describe, I'd like to meet my Grandpa and all the other family members I've heard about but never got to meet, as well as catch up with my buddies who'll probably get up there before I do. Ditto for all my pets and animal friends long departed and sorely missed.
Yep, it'd be one big family reunion, then I go spend the rest of eternity exploring, learning, and having a nice time, with a few of my favorite steam engines along the way (I'd be sure to look out for Walt Disney and Ward Kimball, they loved 'em too, and I'd want to stop and talk trains with them sometime...)